The immensely influential Boerhaave established the practice of clinical teaching, and the institution of the teaching hospital. Such major figures as Linnaeus (who went on to become a student) and Voltaire came to visit him. Other students included Albinus (who went on to be recalled as a professional colleague), Musschenbroek, van Swieten, Haller, La Mettrie and Pringle. ‘sGravesande was a younger colleague. Fahrenheit visited and corresponded (Boerhaave was a pioneer of the clinical use of the thermometer); Sloane was another correspondent. Haller described Boerhaave as the teacher of all Europe.